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Optical Water Type Guided Approach to Estimate Optical Water Quality Parameters

Kristi Uudeberg, Age Aavaste, Kerttu-Liis Kõks, Ave Ansper, Mirjam Uusõue, Kersti Kangro, Ilmar Ansko, Martin Ligi, Kaire Toming, Anu Reinart
2020 Remote Sensing  
This study introduced an optical water type guided approach for boreal regions inland and coastal waters to estimate optical water quality parameters, such as the concentration of chlorophyll-a (Chl-a)  ...  The correlation was high, from 0.87 up to 0.93, between the in situ measured optical water quality parameters and the parameters predicted by the optical water type guided approach.  ...  Acknowledgments: The authors express special gratitude to people from the Centre for Limnology for providing in situ data in the frames of national monitoring program, to the Tartu Observatory water remote  ... 
doi:10.3390/rs12060931 fatcat:ypsahzovrfdv5ilj6s45l6duse

Validation and Comparison of Water Quality Products in Baltic Lakes Using Sentinel-2 MSI and Sentinel-3 OLCI Data

Soomets, Uudeberg, Jakovels, Brauns, Zagars, Kutser
2020 Sensors  
Along with the water quality products, the optical water types were obtained, because in lakes one-method-to-all approach is not working well due to the optical complexity of the inland waters.  ...  Deriving the water quality parameters with optical water type classification should be the first step in estimating the ecological status of the lakes with remote sensing.  ...  Using the OWT guided approach proved to be a very good method for estimating water quality parameters in lakes using both MSI and OLCI data.  ... 
doi:10.3390/s20030742 pmid:32013214 pmcid:PMC7038399 fatcat:anvsiyyeyjebbd6tei5setgsei

D3.3 EO based processors and products

Claudia Giardino, Mariano Bresciani, Giacomo De Carolis, Francesca De Santi, Stephan Simis, M Warren, K Alikas, A. Ansper, Diana Vaiciute, M Bucas, A Hommersom, J Attila (+2 others)
2018 Zenodo  
water quality.  ...  This is particularly the case for EOMORES, whose target lakes include a wide range of water types.  ...  Algorithms for water quality parameters from Rrs data Various algorithms exist to derive water quality parameters in both optically deep and optically shallow waters based on the relation between remote  ... 
doi:10.5281/zenodo.4031234 fatcat:zspfjozo6jafhpsxkfgdic6qq4

MR Water Quantitative Priors Improves the Accuracy of Optical Breast Imaging

C M Carpenter, B W Pogue, Shudong Jiang, Jia Wang, B A Hargreaves, Rebecca Rakow-Penner, B L Daniel, K D Paulsen
2011 IEEE Transactions on Medical Imaging  
We present a methodology to improve optical quantification by utilizing the ability of Dixon MR imaging to quantitatively estimate water and fat; this technique effectively reduces optical crosstalk between  ...  Magnetic resonance (MR) guided optical breast imaging is a promising modality to improve the specificity of breast imaging, because it provides high-resolution quantitative maps of total hemoglobin, oxygen  ...  In contrast, the joint weighted estimation approach improves the water estimate.  ... 
doi:10.1109/tmi.2010.2071394 pmid:20813635 pmcid:PMC3774063 fatcat:fkehzba6rba2xisskdjjidgmb4


E. Spyrakos, P. Hunter, S. Simis, C. Neil, C. Riddick, S. Wang, A. Varley, M. Blake, S. Groom, J. Torres Palenzuela, L. Vilas Gonzalez, C. Cardenas (+4 others)
2020 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
This approach has resulted in a step-change in our ability to produce regional and global water quality products for optically complex waters.  ...  This study provides an overview of the challenges and solutions of developing a global observation platform, including the diverse and complex optical properties of inland waters and guided algorithm selection  ...  ACKNOWLEDGEMENTS We would like to thank the European Union's Horizon 2020 research and innovation programme (CoastObs, grant agreement n° 776348, EOMORES, grant agreemnt no. 730066 and CERTO staring in  ... 
doi:10.5194/isprs-annals-iv-3-w2-2020-101-2020 fatcat:lcctjv26ifbnxckuw3y4pdtsnm


R. L. Jalbuena, A. C. Blanco, A. Manuel, R. R. Sta. Ana, J. A. Santos
2019 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
images to be able to produce water quality maps.  ...  Bio-optical modelling is a type of empirical model that relates the inherent optical properties of water to different biological properties like chlorophyll-a.  ...  Quality Monitoring (MCWQM) Project.  ... 
doi:10.5194/isprs-archives-xlii-4-w16-277-2019 fatcat:zzmf6y7gabdyzl5he67u6a56ha

Multiobjective guided priors improve the accuracy of near-infrared spectral tomography for breast imaging

Jinchao Feng, Shudong Jiang, Junqing Xu, Yan Zhao, Brian W. Pogue, Keith D. Paulsen
2016 Journal of Biomedical Optics  
An image reconstruction regularization approach for magnetic resonance imaging-guided near-infrared spectral tomography has been developed to improve quantification of total hemoglobin (HbT) and water.  ...  , and 10% and 11%, compared to that in the no-prior, DCE-or DW-guided reconstructed images in three-dimensional simulations, respectively.  ...  The optical images reconstructed by the no-prior approach (d), guided by DCE (e), DW (f), combined DCE-DW (g) are also presented.  ... 
doi:10.1117/1.jbo.21.9.090506 pmid:27658468 pmcid:PMC5034016 fatcat:wb4ntg67hrafhkwxmq45gvkelu

QDA-System: A Cloud-Based System for Monitoring Water Quality in Brazilian Hydroelectric Reservoirs from Space

Marcelo Pedroso Curtarelli, Edmar Neto, Fanny de Siqueira, Felipe Yopan, Gilmar Soares, Gilnei Pauli, João de Souza, Luana Silva, Marcio Sagaz, Miguel Demay, Natália Bortolas, Ricardo Yoshimura (+1 others)
2022 Remote Sensing  
and national capacity to develop innovative systems with a high degree of technological content.  ...  Acknowledgments: We would like to thank the Foz do Chapecó S.A. and the Brazilian Electricity Regulatory Agency (ANEEL) for its encouragement, long-term vision, support, and for believing in the local  ...  Customizable: The capacity to use multiple image sources (e.g., Sentinel-2 MSI, Landsat-8 OLI, Planet ® ) and implementation of different types of water quality models according to site-specific needs;  ... 
doi:10.3390/rs14071541 dblp:journals/remotesensing/CurtarelliNSYSP22 fatcat:xiioweavh5gdjhxqmi7kg7q3le

Combining near-infrared tomography and magnetic resonance imaging to study in vivo breast tissue: implementation of a Laplacian-type regularization to incorporate magnetic resonance structure

Ben Brooksby, Shudong Jiang, Hamid Dehghani, Brian W. Pogue, Keith D. Paulsen, John Weaver, Christine Kogel, Steven P. Poplack
2005 Journal of Biomedical Optics  
When prior knowledge of the structure of phantoms is used to guide NIR property estimation, root mean square ͑rms͒ image error decreases from 26 to 58%.  ...  This approach is expected to improve recovery of abnormalities within the breast, as the inclusion of structural information increases the accuracy of recovery of embedded heterogeneities, at least in  ...  The most widely adopted approach to this problem incorporates parameter estimation strategies based on models of light propagation in tissue.  ... 
doi:10.1117/1.2098627 pmid:16292948 fatcat:gprb2okrirgqbbjkk54bqa5nxy

Intercomparison of shallow water bathymetry, hydro-optics, and benthos mapping techniques in Australian and Caribbean coastal environments

Arnold G. Dekker, Stuart R. Phinn, Janet Anstee, Paul Bissett, Vittorio E. Brando, Brandon Casey, Peter Fearns, John Hedley, Wojciech Klonowski, Zhong P. Lee, Merv Lynch, Mitchell Lyons (+2 others)
2011 Limnology and Oceanography : Methods  
Science, resource management, and defense need algorithms capable of using airborne or satellite imagery to accurately map bathymetry, water quality, and substrate composition in optically shallow waters  ...  The results provide a guide to the conditions where each approach may be used (available image and field data and processing capability).  ...  these optically shallow waters to about 7 to 13 m deep over multiple benthic and substrate cover types.  ... 
doi:10.4319/lom.2011.9.396 fatcat:dk6vwiqerbdehkx2l5jpuawggq

Towards the Combination of C2RCC Processors for Improving Water Quality Retrieval in Inland and Coastal Areas

Jesús Soriano-González, Esther Patricia Urrego, Xavier Sòria-Perpinyà, Eduard Angelats, Carles Alcaraz, Jesús Delegido, Antonio Ruíz-Verdú, Carolina Tenjo, Eduardo Vicente, José Moreno
2022 Remote Sensing  
a shift to dynamic algorithm blending approaches.  ...  However, [TSM] and [Chl-a] derived from the different processors with default calibration factors were not suitable within the targeted scenarios, requiring recalibration based on optical water types or  ...  A common alternative approach is to switch between different empirical and bio-optical algorithms depending on the optical water type (OWT).  ... 
doi:10.3390/rs14051124 fatcat:cbvcs5fl6vbmnj7knp5k6mn3jq

Development, validation, and fusion of high resolution active and passive optical imagery

W. P. Bissett, Sharon DeBra, Mubin Kadiwala, David D. R. Kohler, Curtis Mobley, Robert G. Steward, Alan Weidemann, Curtiss O. Davis, Jeff Lillycrop, Robert Pope, Ivan Kadar
2005 Signal Processing, Sensor Fusion, and Target Recognition XIV  
However, the estimation of bathymetry requires knowledge, or the simultaneous solution, of water column Inherent Optical Properties (IOPs) and bottom reflectance.  ...  The joint data set allowed for the advancement and validation of a previously generated Look-Up- Table ( LUT) approach to the simultaneous retrieval of bathymetry, IOPs, and bottom type.  ...  Yet, frequently there were off-sets in the estimates that were ascribed to environmental errors, including errors in the estimation of water clarity or bottom types.  ... 
doi:10.1117/12.603751 fatcat:szz3rygqujbqvfpn55r2cwul4u

IoT-based Water Management Systems: Survey and Future Research Direction

Shereen Ismail, Diana W. Dawoud, Nadhem Ismail, Ronald Marsh, Ali S. Alshami
2022 IEEE Access  
In this work, we also propose a new optical water management system to address a gap in the literature, particularly for oilfield processes that require significant amounts of water to stimulate oil production  ...  Overall, this work provides a seminal guide for future research efforts focused on integrating IoT in the field of water management and monitoring.  ...  Optical sensors are used to measure water quality parameters such as dissolved oxygen, pH, turbidity, bacteria, hydrocarbons, and nitrates; however, the only optical sensor type, which decompose the spectral  ... 
doi:10.1109/access.2022.3163742 fatcat:crhf5blt2vbl7ho7lc2i7vwu6e

Imaging breast adipose and fibroglandular tissue molecular signatures by using hybrid MRI-guided near-infrared spectral tomography

B. Brooksby, B. W. Pogue, S. Jiang, H. Dehghani, S. Srinivasan, C. Kogel, T. D. Tosteson, J. Weaver, S. P. Poplack, K. D. Paulsen
2006 Proceedings of the National Academy of Sciences of the United States of America  
Magnetic resonance (MR)-guided near-infrared spectral tomography was developed and used to image adipose and fibroglandular breast tissue of 11 normal female subjects, recruited under an institutional  ...  Combined MR and near-infrared tomography provides fundamental molecular information about these tissue types with resolution governed by MR T1 images. hemoglobin ͉ magnetic resonance imaging ͉ water ͉  ...  Discussion The segmented MRI in the NIR imaging plane provides estimates of the percentage of adipose tissue by area, which was used to guide data analysis and ranged from 49% to 86%, with an average of  ... 
doi:10.1073/pnas.0509636103 pmid:16731633 pmcid:PMC1482663 fatcat:z42llj5zrzfq7ajk6vikrj5osu

Sensitivity analysis of a photonic crystal structure for index-of-refraction sensing

Ofer Levi, Meredith M. Lee, Jingyu Zhang, Virginie Lousse, Steven R. J. Brueck, Shanhui Fan, James S. Harris, Alexander N. Cartwright, Dan V. Nicolau
2007 Nanoscale Imaging, Spectroscopy, Sensing, and Actuation for Biomedical Applications IV  
Spectral peak width was found to be 9.8 and 4.4 nm around 816 nm (water media), corresponding to a quality factor Q of 83 and 181, respectively.  ...  We present the optical characterization of an all-dielectric photonic crystal (PC)-based guided resonance filter sensitive to index-of-refraction changes in aqueous solutions.  ...  We estimated side-wall roughness to be < 10 nm.  ... 
doi:10.1117/12.705670 fatcat:wqnya6zfbncrfbusfsno35vfom
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